some keys not working on keyboard

hey ya i have the small usb keyboard for the imac and the numbers one to nine are not working as well as the backspace key
i guess number lock might be on but i cant manage to turn it off (if it is actually on)
there is no numlock key on the keyboard or a clear key, fn and f6 is not doing anything
mouse keys, sticky keys and slow keys are turned off
if i go to keyboard viewer and click on the numbers they work